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This work deals with a non-linear technique to control a grid connected photovoltaic system. Sliding-Mode Controller (SMC) is proposed to offer a proper and a rapid maximum power point tracking to control the boost converter. To guarantee the SMC stability, three conditions are fulfilled and performed: transversality, reachability and equivalent control. The Sliding-Mode approach is applied also to...
We consider the problem of controlling single-phase grid connected photovoltaic system based on a half bridge inverter. The control objectives are threefold: i) Maximum power point tracking (MPPT) of PV system. ii) Unity power factor in the grid. iii) Regulating the output voltage to a desired reference value. The considered problem is dealt with by designing a nonlinear controller using the sliding...
The effect of temperature and irradiance on photovoltaic cell outputs was studied using Alternating Transient Program (ATP). A non linear current source was implemented in ATP to model a PV module under varying solar irradiance and temperature conditions. In this study, the mathematical equations were implemented and MathCad software was used to confirm the obtained results. The implemented PV module...
This paper presents a control scheme and transient model for a voltage source DC-to-DC converter acting as the DC link interface for photovoltaic array. The control scheme provides for Maximum Power Point Tracking (MPPT) technique on the Photovoltaic array while maintaining a constant DC link voltage that can be tied to an energy storage system and/or a voltage source converter DC-to-AC converter...
In this paper, the control of single-phase current source inverter-based grid tie photovoltaic (PV) system is addressed. An intermediate DC/DC buck converter interfaces the PV source and the DC-AC inverter. A complete control structure for the single-phase PV system is presented. In source side, a Perturb and Observe algorithm is used to match the maximum power available in the PV panels. In grid...
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